﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Test01
{
    class Test01
    {
        static void Main(string[] args)
        {
            const double PI = 3.14;
            int r = 4;
            int height = 10;
            Console.WriteLine("圆柱的底面积为：" + PI * r * r);
            Console.WriteLine("圆柱的体积为：" + PI * r * r * height);
        }
    }
}
